Lighting device



FIG. 1 is a top right-side perspective view of a lighting device in accordance with the present design;

FIG. 2 is a bottom left-side perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right-side view thereof, the left-side view thereof being a mirror image of the right-side view;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof. 

CLAIM I claim the ornamental design for a lighting device, as shown and described. 